A cistern has 3 pipes A, B and C. A and B can fill it in 3 and 4 hours respectively, and C can empty it in 1 hour. If the pipes are opened at 3 p.m., 4 p.m. and 5 p.m. respectively on the same day, the cistern will be empty at- - Study24x7
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Nisha Tanwar
07 Aug 2019 10:22 AM study24x7 study24x7

A cistern has 3 pipes A, B and C. A and B can fill it in 3 and 4 hours respectively, and C can empty it in 1 hour. If the pipes are opened at 3 p.m., 4 p.m. and 5 p.m. respectively on the same day, the cistern will be empty at-

A

7.12 p.m.

B

7.15 p.m.

C

7.10 p.m.

D

7.18 p.m.

SSC Banking Railways
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